Table 2.

Baseline characteristics at time of randomization

Characteristic	Initial Laparotomy Group (n=146)	Initial Drainage Group (n = 162)
Age, mean (SD), d	11.6 (10.0)	12.1 (9.9)
On vasopressors, No. (%)	41 (28.1)	59 (36.4)
Receiving HFOV or HFJV, No. (%)	32 (21.9)	48 (29.6)
pH, mean (SD)	7.25 (0.1)	7.23 (0.1)
FiO2, mean (SD)	44.8 (26.3)	45.9 (24.1)
Mean blood pressure, mean (SD), mmHg	37.1 (10.3)	37.0 (11.5)
Lowest platelet count, mean (SD)	155.7 (96.0)	150.4 (80.9)
Surgeon’s preoperative diagnosis, No. (%)
Necrotizing enterocolitis	42 (28.8)	53 (32.7)
Isolated intestinal perforation	104 (71.2)	109 (67.3)
Baseline predicted risk of death or NDI
Baseline Risk, mean (SD)	0.62 (0.27)	0.68 (0.24)
Baseline Risk, median (p25, p75)	0.63 (0.42, 0.88)	0.71 (0.51, 0.89)